math

a red light winks every 6 seconds, a white one every 10 seconds, and a green one every 14 seconds. how often they wink together?

  1. 👍 0
  2. 👎 0
  3. 👁 107
asked by sean
  1. 6 = 2*3
    10 = 2*5
    14 = 2*7

    LCM(6,10,14) = 2*3*5*7 = 210

    so, every 210 seconds they will blink at the same time

    1. 👍 0
    2. 👎 0
    posted by Steve

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    the green light flashes every 3 seconds,the red every 5 seconds and white at 10 seconds. iF they flash at 12 noon.When will they flash together again in a minute? in an hour?

    asked by Anonymous on July 8, 2013
  2. algebra

    A TRAFFIC LIGHT IS RED FOR 38 SECONDS YELLOW FOR 10 SECONDS AND GREEN FOR ONE MINUTE AND TWELVE SEONDS. IN A CONSTANTLY REPEATING CYCLE, WHAT IS THE PROBABILITY THAT AT THE MOMENT A PASSING PEDESTRIAN GLANCES AT IT, THE LIGHT WILL

    asked by ART on June 2, 2010
  3. math, 5th grade

    I am really stuck on how to figure this answer out, could you please help me? A stoplight flashes red for 50seconds, yellow for five seconds, and green for 65 seconds. In a 24 hour period, how long is the light red?

    asked by phoebe on December 3, 2010
  4. Physics

    A car sits at a red light. Once the light turns in green, the driver accelerats at a rat of 3.5m/s^2. How far has the car moved after 6 seconds? I have so far d= (1/2)at^2 please check is it (1/2)(3.5m/s^2)(6 seconds) is the

    asked by Tracy on January 16, 2012
  5. physics

    A car stops for a red ligth. The light turns green and the car moves for 3 seconds at a steadily increasing speed. During this time, it travels 20 meters. The car then travels at a constant speed for another 3 seconds for a

    asked by Anna on January 22, 2012
  6. AP Physics B

    A soap bubble of index of refraction 1.43 strongly reflects both the red and the green components of white light. What minimum film thickness allows this to happen? (In air,the wavelength of red light is 703 nm, of green light

    asked by Daisy on February 19, 2013
  7. math

    A traffic light follows the pattern green, yellow, red for 55, 5, and 20 seconds, respectively. What is the probability that the driver approaching this light will find it green or yellow?

    asked by Anonymous on July 6, 2013
  8. Math

    A car is stopped at a red light, and starts moving at time t = 0 when the light turns green, with an acceleration given by a(t) = √t, with t given in seconds, and distances given in metres. a. Find a Formul

    asked by Mr Homie on June 6, 2016
  9. physic

    a car sits still at a red light. once the light turns green, the driver accelerates at a rate of 3.5 m/s^2. how far has the car moved after 6 seconds?

    asked by grissell on January 14, 2012
  10. Algebra - word problem

    A red ball and a green ball are simultaneously tossed into the air. The red ball is given an initial velocity of 96 feet per second, and its height, t seconds after it is tossed is (-16t^2 + 96t) feet. The green ball is given an

    asked by lindy on November 30, 2009

More Similar Questions